Is possible binding toArrow in Shape?

I look forward to receiving your feedback.

Is possible binding “toArrow” in Shape?
or Any ideas for change toArrow in Shape?

before

$(go.Shape,
{
toArrow: ‘Standard’,
fromArrow: ‘’,
stroke: ‘#999’,
fill: ‘#999
}
)

change source (not binding)

$(go.Shape,
{
stroke: ‘#999’,
fill: ‘#999
},
new go.Binding(“toArrow”, “toArrow”),
new go.Binding(“fromArrow”, “fromArrow”)
)

linkArray.push({
from: pkey,
to: key,
toArrow: ‘’,
fromArrow: 'Backward’
});

Yes, that should work. See for example the Arrowheads sample, http://gojs.net/latest/samples/arrowheads.html

Thank you for asked.